In Chile, the Chilean military's responsibilities are territorial defense, ensuring the country’s sovereignty, assisting with disaster and humanitarian relief, and providing some internal security duties such as border security or maintaining public order if required; a key focus in recent years has been assisting with securing the border area with Bolivia and Peru; it trains regularly and participates in bilateral and multinational training exercises, as well as international peacekeeping operations 

Chile and Argentina have a joint peacekeeping force known as the Combined Southern Cross Peacekeeping Force (FPC), designed to be made available to the UN; the FPC is made up of air, ground, and naval components, as well as a combined logistics support unit

the Chilean Army was founded in 1810, but traces its origins back to the Army of the Kingdom of Chile, which was established by the Spanish Crown in the early 1600s; Chile's military aviation was inaugurated in 1913 with the creation of a military aviation school; the Navy traces its origins to 1817; it was first led by a British officer and the first ships were largely crewed by American, British, and Irish sailors; by the 1880s, the Chilean Navy was one of the most powerful in the Americas, and included the world’s first protected cruiser (a ship with an armored deck to protect vital machine spaces) (2025)